20 Go In a certain experiment, a small radioactive source must move at selected, extremely slow speeds. This motion is accom- plished by fastening the source to one end of an aluminum rod and heating the central section of the Radioactive Electric heater source 2000 Clamp d→ Figure 18-31 Problem 20. rod in a controlled way. If the effective heated section of the rod in Fig. 18-31 has length d = 2.00 cm, at what constant rate must the temperature of the rod be changed if the source is to move at

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•.20 GO In a certain experiment, a
small radioactive source must
move at selected, extremely slow
speeds. This motion is accom-
plished by fastening the source to
one end of an aluminum rod and
heating the central section of the
rod in a controlled way. If the effective heated section of the rod
in Fig. 18-31 has length d = 2.00 cm, at what constant rate must
the temperature of the rod be changed if the source is to move at
a constant speed of 100 nm/s?
Radioactive Electric
heater
source
J
Clamp
Figure 18-31 Problem 20.
·d
Transcribed Image Text:•.20 GO In a certain experiment, a small radioactive source must move at selected, extremely slow speeds. This motion is accom- plished by fastening the source to one end of an aluminum rod and heating the central section of the rod in a controlled way. If the effective heated section of the rod in Fig. 18-31 has length d = 2.00 cm, at what constant rate must the temperature of the rod be changed if the source is to move at a constant speed of 100 nm/s? Radioactive Electric heater source J Clamp Figure 18-31 Problem 20. ·d
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